[{"id":252526,"question":"The pressure exerted by gas molecules is due to their","choices":[{"text":"collisions","value":"A"},{"text":"densities","value":"B"},{"text":"masses","value":"C"},{"text":"kinetic energy","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252525,"question":"The temperature of a gas is directly proportional to its","choices":[{"text":"average translational kinetic energy","value":"A"},{"text":"enthalpy","value":"B"},{"text":"internal energy","value":"C"},{"text":"hydration energy","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252524,"question":"The motion imparted to the gas molecules by gravity is","choices":[{"text":"very small","value":"A"},{"text":"very large","value":"B"},{"text":"negligible","value":"C"},{"text":"appreciable","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252523,"question":"Theoretically, the temperature at which volume of gas become equal to zero is called","choices":[{"text":"Boiling point of water","value":"A"},{"text":"Zero absolute","value":"B"},{"text":"Zero Kelvin","value":"C"},{"text":"both B and C","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252522,"question":".The number of moles in 2.24 dm3 of H2 gas at STP is:","choices":[{"text":"1","value":"A"},{"text":"0.1","value":"B"},{"text":"10","value":"C"},{"text":"0.01","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252521,"question":"One dm3 of H2 and O2: has different masses but no. of particles are","choices":[{"text":"same","value":"A"},{"text":"H2 has greater","value":"B"},{"text":"different","value":"C"},{"text":"<div><br></div><div>O2 has greater</div>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252520,"question":"The pressure of gas at constant temperature in a container of 2dm3 is 10 atm what will be its final pressure if it is connected with 10 dm3 container","choices":[{"text":"2 atm","value":"A"},{"text":"1.6 atm","value":"B"},{"text":"5 atm","value":"C"},{"text":"I atm","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252519,"question":"Which one of the following statements is wrong for gases?","choices":[{"text":"gases do not have a definite shape and volume","value":"A"},{"text":"volume of the gas is equal to volume of container confining the gas","value":"B"},{"text":"confirmed gas exerts uniform pressure on the walls of its container in which it is enclosed","value":"C"},{"text":"<div>mass of gas cannot be determined by weighing a container in which it is enclosed</div>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252518,"question":"The root mean square velocity of a gas is doubled when the temperature is","choices":[{"text":"reduced to half.","value":"A"},{"text":"reduced to one-fourth","value":"B"},{"text":"increased four times","value":"C"},{"text":"inereased two times","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252517,"question":"At constant volume, for a fixed number of moles of a gas the pressure of the gas increases with size of temperature due to","choices":[{"text":"increase in average molecular speed","value":"A"},{"text":"increase in number of moles","value":"B"},{"text":"increase in molecular attraction","value":"C"},{"text":"decrease in the distance between the molecules","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252516,"question":"The molecular speed Crms of gas is","choices":[{"text":"Independent of temperature","value":"A"},{"text":"Proportional to the absolute temperature","value":"B"},{"text":"Proportional to the square root of absolute temperature","value":"C"},{"text":"Proportional to the square of absolute temperature","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252515,"question":"Which is not true in case of an ideal gas?","choices":[{"text":"It cannot be converted into a liquid","value":"A"},{"text":"There is no interaction between the molecules","value":"B"},{"text":"All molecules of the gas move with same speed","value":"C"},{"text":"At a given temperature P'V is proportional to the amount of the gas","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252514,"question":"According to kinetic theory of gases kinetic energy depends on","choices":[{"text":"Temperature","value":"A"},{"text":"Collision","value":"B"},{"text":"Pressure","value":"C"},{"text":"Atomic number","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252513,"question":"Acording to the kinetic theory of gases","choices":[{"text":"The pressure exerted by a gas is proportional to mean square velocity of the molecules","value":"A"},{"text":"The pressure exerted by the gas is proportional to the root mean square velocity of the molecules","value":"B"},{"text":"The root mean square velocity is inversely proportional to the temperature","value":"C"},{"text":"The mean translational KE of the molecule is directly proportional to the absolute temperature","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252428,"question":"An ideal gas expands according to PV=constant. On expansion, the temperature of gas","choices":[{"text":"will rise","value":"A"},{"text":"will drop","value":"B"},{"text":"cannot be determined because the exteral pressure is not known","value":"C"},{"text":"will remain same","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252427,"question":"The density of neon will be highest at","choices":[{"text":"STP","value":"A"},{"text":"0°C, 2 atm","value":"B"},{"text":"273°C, 1 atm","value":"C"},{"text":"273°C, 2 atm","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252426,"question":"If a gas expands at constant temperature","choices":[{"text":"The pressure decreases","value":"A"},{"text":"The Kinetic energy of the molecules remains the same","value":"B"},{"text":"The kinetic energy of the molecules decreases","value":"C"},{"text":"The number of molecules of the gas increase","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252425,"question":"What are the conditions under which the relation between volume (V) and number of moles (n) of gas is plotted? (Pressure; T-temperature)","choices":[{"text":"constant P and T","value":"A"},{"text":"constant P and V","value":"B"},{"text":"constant T and V","value":"C"},{"text":"constant n and v","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252424,"question":"An ideal gas, obeying Kinetic theory of gases cannot be liquified, because","choices":[{"text":"its critical temperature is above 0°C","value":"A"},{"text":"its molecules are relatively small in size","value":"B"},{"text":"It solidifies before becoming a liquid","value":"C"},{"text":"Forces acting between its molecules are negligible","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252423,"question":"If temperature is 73K and volume is 146 cm3 then calculate the value of K=V/T","choices":[{"text":"5","value":"A"},{"text":"4","value":"B"},{"text":"3","value":"C"},{"text":"2","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252422,"question":"The volume of given mass of gas is directly proportional to absolute temperature when pressure is kept constant this is called","choices":[{"text":"Boyle's law","value":"A"},{"text":"Charles's law","value":"B"},{"text":"Graham's law","value":"C"},{"text":"Dalton's law","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252421,"question":"Which type of motion is exhibited by gases?","choices":[{"text":"Vibrational","value":"A"},{"text":"Transitional","value":"B"},{"text":"Rotational","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252420,"question":"For an ideal gas, number of mole in terms of its pressure P, temperature T and gas constant is","choices":[{"text":"PT/R","value":"A"},{"text":"PRT","value":"B"},{"text":"PV/RT","value":"C"},{"text":"RT/P","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252419,"question":"Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is","choices":[{"text":"same as that of a hydrogen molecule","value":"A"},{"text":"half that of a hydrogen molecule","value":"B"},{"text":"two times that of a hydrogen molecule","value":"C"},{"text":"four times that of hydrogen molecule","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252418,"question":"If increase in temperature and volume of an ideal gas is two times, then the initial pressure P changes to","choices":[{"text":"4P","value":"A"},{"text":"P","value":"B"},{"text":"2P","value":"C"},{"text":"3P","value":"D"},{"value":"E"}],"correctAnswer":2}]